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The figure shows a vector $ a $ in the $ xy $-plane and a vector $ b $ in the direction of $ k $. Their lengths are $ \mid a \mid = 3 $ and $ \mid b \mid = 2 $.
(a) Find $ \mid a \times b \mid $.(b) Use the right-hand rule to decide whether the components of $ a \times b $ are positive, negative, or 0.
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Calculus 3
Chapter 12
Vectors and the Geometry of Space
Section 4
The Cross Product
Vectors
Missouri State University
Campbell University
Harvey Mudd College
Boston College
Lectures
02:56
In mathematics, a vector (from the Latin word "vehere" meaning "to carry") is a geometric entity that has magnitude (or length) and direction. Vectors can be added to other vectors according to vector algebra. Vectors play an important role in physics, engineering, and mathematics.
11:08
In mathematics, a vector (from the Latin word "vehere" which means "to carry") is a geometric object that has a magnitude (or length) and direction. A vector can be thought of as an arrow in Euclidean space, drawn from the origin of the space to a point, and denoted by a letter. The magnitude of the vector is the distance from the origin to the point, and the direction is the angle between the direction of the vector and the axis, measured counterclockwise.
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The figure shows a vector …
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03:50
For the vectors $\boldsy…
04:22
If $ a = i - 2k $ and $ b …
01:41
For given vectors, $\vec{a…
04:57
For the three vectors show…
01:49
Figure shows the orientati…
06:12
If position vectors, $\o…
05:08
Let $\vec{a}=\vec{j}-\vec{…
Vector $\vec{A}=3 \hat{\im…
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